Renda RDHU High Power UPS Power Supply Description:
RDHU series product features and application fields: RDHU series UPS can provide stable power environment and reliable power protection for users' large and medium-sized data centers and critical loads, and meet the high reliability requirements of users for high-power UPS. The application of double conversion online IGBT technology and dual built-in microprocessors ensures stable and pure sine wave output, providing users with safe and reliable power protection.
Randa RDHU high-power UPS power supply application field:
Randa RDHU series UPS power supplies are generally used in large and medium-sized data centers and critical loads to provide stable power environment and reliable power protection, meeting users' high reliability requirements for high-power UPS.
●The online double conversion design completely isolates the impact of various types of grid pollution and grid faults on the load that may exist in the mains and oil turbines.
●The output power factor is increased to 0.9, which is more suitable for large-scale server computers and network centers that use power factor correction technology, and increases the load capacity by more than 10% compared with traditional UPS.
●Using advanced 6th generation DSP and full digital control technology, the system stability is higher.
●Zero phase shift output isolation transformer to reduce the influence of zero ground voltage and load harmonic current on the inverter.
●Super output overload and short circuit capability to ensure system stability and system safety in limit state.
●Advanced decentralized active parallel technology, no need for centralized bypass cabinet, can achieve 6 sets of parallel connection.
●Ultra-wide input voltage and frequency range, adapt to harsh power grid environment.
●Intelligent battery management, automatic maintenance of battery, prolong service life.
●6 inch large LCD monitor, Chinese and English display interface, easy for users to use.
●Layered independent closed air duct and redundant fan design, circuit board three-proof paint protection, built-in dust filter, with efficient heat dissipation and effective protection in harsh environments.
●Inverter anti-overload ability and anti-short circuit output ability is extremely strong equipment nominal inverter overload:
110% can work for 60 minutes; 125% can work for 10 minutes; 165% can work for 1 minute; 200% can work for 30 seconds (single phase) Due to the unique current limiting output control technology, when the user accidentally causes serious overload or short circuit at the UPS output, the output current of the inverter will not increase indefinitely, so that the model has a strong ability to resist short circuit and step load "shock" (Note: each UPS has done a successful output short circuit test before leaving the factory). Therefore, the reliability of the inverter of this UPS is extremely high.
●Excellent ability with three-phase unbalanced load
With a 100% unbalanced load, the asymmetry between the three-phase voltages is less than 2%, and the three-phase displacement asymmetry is less than 1201%. Although some models can carry three-phase unbalanced loads, they do not give indicators of asymmetry, and the degree of asymmetry is large. When this model has a three-phase unbalanced load for a long time, the load power supply may fail due to voltage symmetry drift.
●Added "ECO" power-saving mode
On the control circuit, the user can freely select the "ECO" working mode, that is, when the quality of the external power grid is good, the UPS automatically supplies power to the load for the bypass, and when the grid voltage or frequency changes or fluctuates, it can automatically and uninterruptedly switch to the inverter power supply. This power supply mode can increase the efficiency of the UPS to 97% (Note: This setting is generally used in areas with good grid quality).
●Perfect battery management function
Complete battery management function with microprocessor control: it includes a battery charging system with temperature compensation; Battery charger current limiting control, anti-overvoltage charging and overcurrent discharge automatic protection function; The LCD displays the percentage of battery charge capacity in real time, the real-time backup supply time when discharging, and the periodic discharge function of the battery pack using programmable automatic test software.
●Multiple communication functions
Through RS232 or RS485 communication interface, users can enter the man-machine dialogue menu running state on the microcomputer or network terminal, under this condition, with the help of self-test and self-diagnosis control functions in the machine, users can display UPS operation or alarm status in real time on the remote terminal computer network, when encountering an alarm situation, you can send E-mail to the user in time, call BP machine, dial number and other ways to alarm. Through the intelligent "self-diagnosis" management system, more than 80 data operating parameter information and alarm information (voltage, current, frequency, midline current, charging and discharging current and voltage of the battery pack, etc.) can be provided to users. The above 400 power operating parameters are automatically stored and displayed in the form of a "stack". It can automatically store up to 500 fault and alarm information, providing users with fault analysis and statistical data, which can significantly shorten the on-site maintenance time.
